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/*
 * 
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
 * identifying information: "Portions Copyrighted [year]
 * [name of copyright owner]"
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 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
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 * only if the new code is made subject to such option by the copyright
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 */

package com.sun.enterprise.universal;

import com.sun.enterprise.universal.i18n.LocalStringsImpl;

/**
 * Convert a msec duration into weeks, hours, minutes, seconds
 * @author bnevins
 * Thread Safe.  
 * Immutable
 */
public final class Duration {
    public Duration(long msec) {
        long msecLeftover = msec;
        
        numWeeks = msecLeftover / MSEC_PER_WEEK;
        msecLeftover -= numWeeks * MSEC_PER_WEEK;
        
        numDays = msecLeftover / MSEC_PER_DAY;
        msecLeftover -= numDays * MSEC_PER_DAY;
        
        numHours = msecLeftover / MSEC_PER_HOUR;
        msecLeftover -= numHours * MSEC_PER_HOUR;
        
        numMinutes = msecLeftover / MSEC_PER_MINUTE;
        msecLeftover -= numMinutes * MSEC_PER_MINUTE;
        
        numSeconds = msecLeftover / MSEC_PER_SECOND;
        msecLeftover -= numSeconds * MSEC_PER_SECOND;

        numMilliSeconds = msecLeftover;
    }

    @Override
    public String toString() {
        String s = "";
        
        if(numWeeks > 0)
            s = strings.get("weeks", numWeeks, numDays, numHours, numMinutes, numSeconds);
        else if(numDays > 0)
            s = strings.get("days", numDays, numHours, numMinutes, numSeconds);
        else if(numHours > 0)
            s = strings.get("hours", numHours, numMinutes, numSeconds);
        else if(numMinutes > 0)
            s = strings.get("minutes", numMinutes, numSeconds);
        else
            s = strings.get("milliseconds", numMilliSeconds + numSeconds * MSEC_PER_SECOND);
        
        return s;
    }

    public final long numWeeks;
    public final long numDays;
    public final long numHours;
    public final long numMinutes;
    public final long numSeconds;
    public final long numMilliSeconds;

    // possibly useful constants
    public final static long MSEC_PER_SECOND = 1000; 
    public final static long MSEC_PER_MINUTE = 60 * MSEC_PER_SECOND; 
    public final static long MSEC_PER_HOUR = MSEC_PER_MINUTE * 60; 
    public final static long MSEC_PER_DAY = MSEC_PER_HOUR * 24;
    public final static long MSEC_PER_WEEK = MSEC_PER_DAY * 7;
    
    private final LocalStringsImpl strings = new LocalStringsImpl(Duration.class);
}